1 #include "first.h"
2
3 #include <errno.h>
4 #include <stdlib.h>
5 #include <string.h>
6
7 #include "buffer.h"
8 #include "http_header.h"
9 #include "log.h"
10 #include "plugin.h"
11 #include "request.h"
12 #include "stat_cache.h"
13
14 typedef struct {
15 const array *indexfiles;
16 } plugin_config;
17
18 typedef struct {
19 PLUGIN_DATA;
20 plugin_config defaults;
21 plugin_config conf;
22 } plugin_data;
23
INIT_FUNC(mod_indexfile_init)24 INIT_FUNC(mod_indexfile_init) {
25 return ck_calloc(1, sizeof(plugin_data));
26 }
27
mod_indexfile_merge_config_cpv(plugin_config * const pconf,const config_plugin_value_t * const cpv)28 static void mod_indexfile_merge_config_cpv(plugin_config * const pconf, const config_plugin_value_t * const cpv) {
29 switch (cpv->k_id) { /* index into static config_plugin_keys_t cpk[] */
30 case 0: /* index-file.names */
31 case 1: /* server.indexfiles */
32 pconf->indexfiles = cpv->v.a;
33 break;
34 default:/* should not happen */
35 return;
36 }
37 }
38
mod_indexfile_merge_config(plugin_config * const pconf,const config_plugin_value_t * cpv)39 static void mod_indexfile_merge_config(plugin_config * const pconf, const config_plugin_value_t *cpv) {
40 do {
41 mod_indexfile_merge_config_cpv(pconf, cpv);
42 } while ((++cpv)->k_id != -1);
43 }
44
mod_indexfile_patch_config(request_st * const r,plugin_data * const p)45 static void mod_indexfile_patch_config(request_st * const r, plugin_data * const p) {
46 p->conf = p->defaults; /* copy small struct instead of memcpy() */
47 /*memcpy(&p->conf, &p->defaults, sizeof(plugin_config));*/
48 for (int i = 1, used = p->nconfig; i < used; ++i) {
49 if (config_check_cond(r, (uint32_t)p->cvlist[i].k_id))
50 mod_indexfile_merge_config(&p->conf,p->cvlist+p->cvlist[i].v.u2[0]);
51 }
52 }
53
SETDEFAULTS_FUNC(mod_indexfile_set_defaults)54 SETDEFAULTS_FUNC(mod_indexfile_set_defaults) {
55 static const config_plugin_keys_t cpk[] = {
56 { CONST_STR_LEN("index-file.names"),
57 T_CONFIG_ARRAY_VLIST,
58 T_CONFIG_SCOPE_CONNECTION }
59 ,{ CONST_STR_LEN("server.indexfiles"),
60 T_CONFIG_ARRAY_VLIST,
61 T_CONFIG_SCOPE_CONNECTION }
62 ,{ NULL, 0,
63 T_CONFIG_UNSET,
64 T_CONFIG_SCOPE_UNSET }
65 };
66
67 plugin_data * const p = p_d;
68 if (!config_plugin_values_init(srv, p, cpk, "mod_indexfile"))
69 return HANDLER_ERROR;
70
71 /* initialize p->defaults from global config context */
72 if (p->nconfig > 0 && p->cvlist->v.u2[1]) {
73 const config_plugin_value_t *cpv = p->cvlist + p->cvlist->v.u2[0];
74 if (-1 != cpv->k_id)
75 mod_indexfile_merge_config(&p->defaults, cpv);
76 }
77
78 return HANDLER_GO_ON;
79 }
80
__attribute_nonnull__()81 __attribute_nonnull__()
82 static handler_t mod_indexfile_tryfiles(request_st * const r, const array * const indexfiles) {
83 for (uint32_t k = 0; k < indexfiles->used; ++k) {
84 const buffer * const v = &((data_string *)indexfiles->data[k])->value;
85 buffer * const b = (v->ptr[0] != '/')
86 ? &r->physical.path
87 : &r->physical.doc_root; /* index file relative to doc_root */
88 /* if the index-file starts with a prefix as use this file as
89 * index-generator */
90
91 /* temporarily append to base-path buffer to check existence */
92 const uint32_t len = buffer_clen(b);
93 buffer_append_path_len(b, BUF_PTR_LEN(v));
94
95 const stat_cache_st * const st = stat_cache_path_stat(b);
96
97 buffer_truncate(b, len);
98
99 if (NULL == st) {
100 switch (errno) {
101 case ENOENT:
102 case ENOTDIR:
103 continue;
104 case EACCES:
105 r->http_status = 403;
106 return HANDLER_FINISHED;
107 default:
108 /* we have no idea what happened. let's tell the user so. */
109 r->http_status = 500;
110 log_perror(r->conf.errh, __FILE__, __LINE__,
111 "index file error for request: %s -> %s",
112 r->uri.path.ptr, r->physical.path.ptr);
113 return HANDLER_FINISHED;
114 }
115 }
116
117 /* found */
118 if (v->ptr[0] == '/') {
119 /* replace uri.path */
120 buffer_copy_buffer(&r->uri.path, v);
121 http_header_env_set(r, CONST_STR_LEN("PATH_TRANSLATED_DIRINDEX"),
122 BUF_PTR_LEN(&r->physical.path));
123 buffer_copy_path_len2(&r->physical.path,
124 BUF_PTR_LEN(&r->physical.doc_root),
125 BUF_PTR_LEN(v));
126 /*(XXX: not done historical, but rel_path probably should be updated)*/
127 /*buffer_copy_buffer(&r->physical.rel_path, v);*/
128 } else {
129 /* append to uri.path the relative path to index file (/ -> /index.php) */
130 buffer_append_string_buffer(&r->uri.path, v);
131 buffer_append_path_len(&r->physical.path, BUF_PTR_LEN(v));
132 /*(XXX: not done historical, but rel_path probably should be updated)*/
133 /*buffer_append_path_len(&r->physical.rel_path, BUF_PTR_LEN(v));*/
134 }
135 return HANDLER_GO_ON;
136 }
137
138 /* not found */
139 return HANDLER_GO_ON;
140 }
141
URIHANDLER_FUNC(mod_indexfile_subrequest)142 URIHANDLER_FUNC(mod_indexfile_subrequest) {
143 if (NULL != r->handler_module) return HANDLER_GO_ON;
144 if (!buffer_has_slash_suffix(&r->uri.path)) return HANDLER_GO_ON;
145
146 plugin_data *p = p_d;
147 mod_indexfile_patch_config(r, p);
148 if (NULL == p->conf.indexfiles) return HANDLER_GO_ON;
149
150 if (r->conf.log_request_handling) {
151 log_error(r->conf.errh, __FILE__, __LINE__,
152 "-- handling the request as Indexfile");
153 log_error(r->conf.errh, __FILE__, __LINE__,
154 "URI : %s", r->uri.path.ptr);
155 }
156
157 return mod_indexfile_tryfiles(r, p->conf.indexfiles);
158 }
159
160
161 __attribute_cold__
162 int mod_indexfile_plugin_init(plugin *p);
mod_indexfile_plugin_init(plugin * p)163 int mod_indexfile_plugin_init(plugin *p) {
164 p->version = LIGHTTPD_VERSION_ID;
165 p->name = "indexfile";
166
167 p->init = mod_indexfile_init;
168 p->handle_subrequest_start = mod_indexfile_subrequest;
169 p->set_defaults = mod_indexfile_set_defaults;
170
171 return 0;
172 }
173